WSJDLive: Will the U.S. Face a Digital Pearl Harbor?

NSA Director Michael Rogers talks to WSJ's Dennis Berman about the three largest cyberthreats to the U.S. They speak at the WSJDLive 2015 conference in Laguna Beach, Calif.

This transcript has been automatically generated and may not be 100% accurate.

... how long until we have a digital Pearl Harbor ... here United States ... I think it's only a matter of when ... there's three things that really concern the aluminum look it Cyber from a Threat perspective number one ... it is only a man of the window for someone uses Siris it's cool to the damage to ... critical infrastructure within our nation ... I'm watching nation states ... groups with in some of that infrastructure at the moment it seems to be ... really focus on recognizance and attempting to understand the characteristics of the structure but it's only a matter of time I believe ... until someone actually does something destructive ... the second ... trend that concerns me ... historically today people are the event focus on the extraction of the debt in Insights with a B for intellectual property for commercial or ... on criminal advantage ... but what happens when suddenly our date is manipulated and no one can believe which are physically sings a military guy ... whose use to this idea like the look in a display I can look at a set of data ... like and very quickly draw a conclusion soon start to make this day based decisions relatively quickly ... what happen to me that all gets called into question you expect and I'm no longer ... I believe is gonna happen in the end of third phenomenon or I think about threats to concern me in the future ... what happens when a non state actors who literally has no interest in the status quo take Meisels an example ... whose vision of the world is diametrically opposed to ours whose vision of the ... the role of individual freedom and choice ... has no place in the world that they envision ... London-based art viewing ... cyber the weather's not just a vehicle ... to generate revenue to recruit to spread the ideology ... but instead they start to viewed as a weapon system Ryan